目的:探讨降钙素原(PCT)的检测在老年人急性阑尾炎诊断中的价值。方法:检测96例在我院进行阑尾切除术的急性阑尾炎和误诊为急性阑尾炎的老年患者以及20例健康体检者血清PCT水平。结果:急性坏疽性阑尾炎及急性化脓性阑尾炎患者术前血清PCT值均较健康对照、阑尾无炎症及急性单纯性阑尾炎患者明显升高(P<0.01);而急性单纯性阑尾炎、阑尾无炎症患者与健康对照三者之间无明显差异(P>0.05);阑尾切除术后血清PCT值呈逐渐下降趋势(P<0.01)。结论:在临床症状及白细胞计数升高、BUS帮助的基础上,结合血清PCT的测定对老年人急性阑尾炎的诊断具有一定价值。 Objective: To investigate the value of procalcitonin (PCT) in the diagnosis of acute appendicitis in the elderly. Methods: The serum PCT levels of 96 cases of acute appendicitis and misdiagnosed acute appendicitis in our hospital and 20 healthy subjects were detected. Results: Preoperative serum PCT values ​​were significantly higher in patients with acute gangrenous appendicitis and acute suppurative appendicitis than those in healthy controls, without appendiceal inflammation and acute simple appendicitis (P <0.01); while in patients with acute simple appendicitis and without appendectomy There was no significant difference between the three groups (P> 0.05). The PCT value decreased gradually after appendectomy (P <0.01). Conclusion: The combination of serum PCT and clinical symptoms and white blood cell count, and the help of BUS, have certain value in the diagnosis of acute appendicitis in the elderly.